Ok I'll try and keep this short. I want a PS4 now that Uncharted 4 has come out. I'm keen to get one. But I'm also aware of PS4 - Neo coming out. Here's the rub however. I've got terminal cancer. (Prognosis in 2014 was 2-5 years). Without a launch / release date of the PS4 I'm not sure if I should just go ahead and get it now, or wait. I've heard rumors it might be coming out as early as this year, at which point it'd probably be ok to wait. But if it's say Q2 2017 or so, I'd rather not wait because cancer blows.
If it wasn't for the whole cancer crud it'd be an easy answer — just wait. But the spanner in my decision making process is my "Best Before" date.
Grab it now, you can always trade in and upgrade when the new one comes if you feel the need.